Heater for sheet deliveries



May 1, 1928.

W. M. KELLY HEATER FOR SHEET DEL IVERIES Filed April 7. 1926 2 Sheets-Sheet 1 anmmi'oz mmmi,

May 1, 1928.

W. M. KELLY HEATER FOR SHEET DELIVERIES Filed April 7. 1926 2 Sheets-Sheet 2 Patented May 1, 1928.

UNITED STATES PATENT OFFICE WILLIAM m. KELLY, or WESTFIELD, NEW JERSEY, nssrenoa ro mnmcm rm rormnnns columnar, or mass! CITY, NEW .masmr, A conpom or m HEATER FOR SHEET DELIVEBIEB.

Application filed April 7, 1826. Serial No. 100,454.

The present invention relates to heaters for sheet deliveries and more particularly to an improved means for controlling the same. I

I It has been roposed to heat sheets as they have been delivered, for such purposes as dispelling the static electricity and drying the ink. To this end the sheets have been passed over a as flame. Obviously,

if the machine should stop while a sheet is over the flame, the sheet would be ignited. To avoid this, burners have been proposed in which the gas is turned off when the machine stops. In one form, this is effected electromagnetically. In another form a centrifugal overnor driven by the machme 1s employerf These automatic devices are exensive to build and install and in operation have not fully satisfied all of the requirements.

It is the princi a1 aim of the present 1nvention to provi e a sim le device that, without fail, will turn off t e supply of gas whenever the machinestops, and will turn 2 it on when the machine starts.

To these ends, the invention com rises a gas valve controlling the supply 0 gas to the burner. This valve is yieldingly held closed and means is provided to open it when so the machine starts and hold it open only as long as the machine is in operation. For the purpose of thus opening and holding open the valve, a frictional device is em 'ployed. A member moving as long as the.

machine is in operation frictionally transmits motion to open the valve, and then slips but continues to hold the valve open. When the speed of themachine slows down sufliciently, or stops, the force transmitted 1s not suificient to hold the valve open and it closes immediately.

Other objects and features of novelty will be apparent from the description taken in connection with the drawings, in which,

Fig. 1 is a side elevation of a. portion of a printing press and an extension sheet delivery having one embodiment of the present invention associated therewith;

Fig. 2 is a vertical cross sectional view so taken substantiall on the line 2-2 of Fig. 1

Fig. 3 is a si e elevation ofthe burner control device of the present invention, a

part being shown in section in order to show the construction of the valve more in detail;

Fig. 4 is a vertical sectional view taken substantially on the line 44 of Fig. 3; and

Fig. 5 is a sectional view of a detail taken substantially on the line 5-5 of Fig. 8.

Referring to the drawings, one form of the invention has been shown in connection with a bed and cylinder press of the two revolution t pe and an extension delivery. It is to be distinctly understood that the invention is not limited to this s ecific installation, but by mere changes in t e piping can be adapted to all forms of sheet deliveries.

As s own, the press includes an impression cylinder 10 and a frame 11. The printed sheets from the cylinder 10 are delivered to the continuously running tapes 12 and 13 and conveyed thereby to a reciprocatin sheet delivery mechanism slidably mount on the frame 14 spaced from the end of the press frame 11. The tapes 12 pass over pulleys secured to the shaft 15 which is contmuously rotated in one direction, during the operation of the press, by means of the large gear 10 coaxial with the c linder, and the ears 10", 10 and 10 clearly indicated in igure 1.

The conveyor mechanism adapted to take sheets from the tapes 12 and deliver them to the pile supporting table may be of any form. As shown, this mechanism includes a set of endless tapes 16 supported on a reciprocating carriage comprising the connected end slides 17 mounted on parallel ways 18 secured to the side members of the frame 14. These tapes pass over pulleys 19 on a shaft 20 journalled in the slide 17. The shaft 20 is driven by a gear and rack connection with the frame 14, the drive includin a clutch so that the tapes are alternately riven and not driven, to thereby discharge the sheets at the proper time. As this drive structure constitutes no part of the present invention, it has not been illustrated. The carriage is reciprocated by a pair of links 21 pivoted at one of their ends to the cars 22 on the slide '17, and at their other ends by means of 26 and a link 27, the latter being connected to some suitable rotating element of the press. The arm 28 is for operating jog er mechanism which constitutes no part of t 1s invention.

The gas burner is mounted immediately in front of the pulleys 19 and slightly below the plane of the upper runs of these tapes, so that the path of the sheets is just above this burner. As shown in Figure 2, the burner 29 consists of a perforated pipe having an elbow at each end and a short p pe connecting the elbow to the supporting brackets 30 secured to the slides 17. The bracket 30 at the right hand end of the burner as viewed in Figure 2 provides a closure. The bracket at the other end, however, is in communication with the air mixer 31 provided with the gas cock 32. The carriage is reciprocating whereas the pipe for supplying the gas to the burner is stationary. Consequently means must be provided conducting the gas from the stationar supply pipe to the mixer 31. This may e accomphshed in any known manner. As shown, a flexible tube 33 connects the gas cook 32 with a similar gas valve 34 carried by a pipe 35. This pipe extends through a fitting 36 which is supported at the upper end ofa rod 37, the lower end of which is seated in a pad 38 secured to the frame 14. The transverse pipe at the end opposlte the valve 34 is connected to a, longitudinally extendin pipe 35" (Figure 1), which, by means 0 pipes 39 and 40, is in communication with the control device C. The gas is supplied to this device by means of the supply pipe 43.

A small boreflexible gas tube 41 conducts s from the control device C to the pilot ight of the gas burner, this tube being supported on the gas pipes 39, 35'}, and 35 by means of the hangers 42.

The control device 0 is desi ed so that as is supplied to the burner on y so long as t e press is in operation. If the ress sto s the sup ly of gas is cut ofi imme lately. s shown in Figures 3, 4 and 5, this control device C comprises a casing 47 having a vertical tubular extension 48 and an open side closed by a cover-plate 51 secured thereto by cap screws 52.

A shaft 49 extends through the casing,

being journalled in bosses carried by oneend of the casin and the cover plate. Secured to the she for rotation therewith as by means of a pin connection, is a disk 50. Facing this disk and just out of contact therewith is a similar disk mounted on the shaft for free rotation relative thereto. Both disks are provided with hubs or bosses 55, one of which abuts against the inside of the end wall of the casing, and the other against the inner side of the cover plate 51, so that the .disks are prevented from separating beyond the desired amount. Secured to one end of the shaft 49 on the outside of the casing is a pulley 53 which is driven from the pulley 46 by means of a belt 45 (see Figure 1). In this manner the shaft 49 is always rotated whenever the press or the sheet delivery are in operation but is stationary when they stop.

The tubular extension 48 is rovided with a bore 59 for the stem 58 of a gas valve. Adjacent the head 65 of this valve the bore 59 is enlarged to form a small chamber 60, and this in turn is enlar ed.to form a larger chamber 63. The cham r 60 through the bore 61 is in communication with the tapppld openin 62 receiving the gas pi e 40. e main dliamber 63 as a latera outlet 66 which is tapped for connection to the ilot light gas tubin The u per end of 0 amher 63 is closed by the tting 67 which is screwed into the upper end of the tubular extension 48. The up er end of the fitting 67 is provided with t e tapped opening '69 for connection with the gas supply pipe and this opening 69 is in communlcation with the chamber 63 through the bore 68. The valve is always forced towards its seat 64 and thus yieldmgly held closed by means of the spring 71 inter osed between the to of the valve and the ttin 67, and centere with respect to the valve y the rojection 72 on the top of the valve. The ower end of the fitting 67 is rovided with In 63 affording stops limiting the extent 0 upward movement of the valve 65.

The casing 47 is provided with a small uantity of oil, the level of the same when t e parts are at rest being indicated by the dotted line 54. When the disk 50 is rotated, a thin film of oil coats the same and acts to transmit rotation to the disk 56. This disk is provided with a pin 57 projecting from the face thereof and disposed just below the lower end of the valve stem 58. So when the free disk 56 is rotated, pin 57 strikes .the lower end of the valve stem 58 and opens the valve against the resistance of the sprin 70. The continued rotation of the disk 50 rictionally tends to continue to rotate disk 56 but the further movement of disk 56 is revented b the valve. Thus the valve is eld open as ong as disk 50 rotates. As soon as the press stops, of course rotation of disk 50 ceases and then sprin 71 forces'the valve 65 to its seat, cutting 0% the supply of gas to the burner.

In operation, when the press is started the as va ve 65 is opened in the manner just escribed, thus placing gas supply inlet 69 in communication with the gas outlet openin 62 so that gas flows to the gas burner.

enever the res or sheet delivery sto s, the spring 71 immediately forces the va ve 65. to its seat, thus cutting of! the supply of gas tothe burner so that the flame is extinieo ' li ht opemng 66 is alwa s in communication understood that the invention is not thus yieldingly closed valve,

- continu the supply of with the as suppl to t at the pilot light is y'furms ed with the gas to keep. it burning. Y

While the press is n operation, the gas valve is always. wide open and the extent of opening does not vary.- Consequently the gas burner is sup lied with gas at a umform rate so that the ame is'steady. g Although one embodiment of 7 tion has been described in detail, it is to be limited, but includes modifications and changes which come within the scope of the appended claims.

Having thus described the invention, what is claimed as new, and desired ,to be secured by Letters Patent is: L Apparatus of the character described including in combination, sheet delivery mechanism, a burner adjacent the path of delivery of the sheets, a valve controlling gas to said burner, means yieldingly holding said valve closed, and means including a friction device holding said valve open only while the apparatus iS in operation whereby said valve closes when the mechanism stops.

2. Apparatus of the character described including in combination, sheet deliveryv mechanism, a burner adjacent the path of the sheets, a valve controlling the supply of gas to the burner, means yieldingly olding said valve closed, a membermoving while the apparatus is in operation, and means to .frictionally transmit motion from said member to said valve to open it and hold it open only as long as the member moves, and permittin it to close when the member stops.

3. T e combination with a rintin press having delivery mechanism, 0 a as urner adjacent the path of the sheets, an a control device for said burner driven by said press, said device com rising a casing having a yieldingly close gas valve and friction means for opening the valve when the press starts and permitting immediate closing when the press stops.

4. The combination with a printin press having sheet'delivery mechanism, 0 a gas burner mounted just below the path of the sheets delivered from said mechanism, a gas supply pipe for said burner, a control device connected thereto comprising an oil tight casin and a valve chamber, a valve in saidcham er, a shaft journalled in said casin and driven by said press, a disk keyed to sai shaft, a free disk on said shaft, oil in said casin supplying a thin film of oil between said isks, whereb the driven disk tends to rotate thefree dis and means on said free disk for actuating said valve, the valve closing whenthe keyed disk stops.

the inven- 5 A gas burner control device for sheet deliveries comprisin y1eldingl closed va ve in said chamber, a drlving isk, a free disk coaxial with, and shghtly spaced from, said driving disk, a casin enclosing said disks and constitutin an 01 chamber, and a pin on said free dis adapted to open said valve, said free disk bemg actuated by said driving diskthrough the viscosity of the oil, the valve closing when the driving disk stops.

Agasburner control device for sheet deliveries comprising in combination, a a rotating member, a free member journalled for rotation adjacent thereto, means for urging said free member to turn withthe rotating member, and means on said free member for openin said valve when said free member is turne said valve closing when the said rotating member stops.

-7. A gas burner control device for sheet deliveries comprising in combination, a cas- 1ng containing oil, a shaft journalled in said casing, a dis keyed to said shaft, a free disk journalled for rotation adjacent said keyed disk whereby the oil transmits motion from the keyed disk to said free disk,

a valve chamber, a valve in said chamber, a stem for said valve slidabl mounted in said casing, and a pin on said fiee disk engaging said stem for operatin the valve, and arranged to permit the va ve' to close when the keyed disk stops.

8. A gas burner control device for sheet deliveries comprisin in combination, a driving disk, a driven isk facing and slightly spaced from the driving disk, means for supplyin a film of oil between said disks, where y the torque is transmitted from the driving to the driven disks by the viscosit of the oil, and a valve actuated by said driven disk, said valve closing when the delivery stops. I J

9. A gas burner control device for sheet deliveriescom rising in combination, a valve chamber, a vs vs in said chamber, a spring forcing said valve closed, a rotatably mounted driving member, a free member. a film of oil between said members whereby torque is transmitted from said driving member to said free member, and means connecting said free member with said valve, whereby the valve is held open against the action of said s ring when said driving member is rotate and closed when the delivery stops. I 10. A gas burner comprising in combinavalve in said chamber, a rotatable driving member, a driven member, means for maintaining a film of oil between said members whereby motion is frictionally transmitted from the drivin to the driven member, and means actuated y movement of said driven a valve chamber, a

,tion, 'a valve chamber, a yieldingly closed member to open said valve, said oil ermitting the valve to close when the riving member stops.

11. A gas burner control device for sheet deliveries comprising in combination, an oil tight casing, an extension on said casing centrally bored to form a valve chamber, a valve in said chamber having a stem, a lgas inlet above said valve, a gas outlet be ow said valve, a shaft journalled in said casing carryin a keyed disk and a mating free disk, 011 in said casin su plying a thin film of oil between sai dis whereby the keyed disk tends to rotate the free disk, and means on said free disk engagin said valve stem to open the valve, said oil 'lm permitting the valve to close when the machine stops.

12. A gas burner control device for sheet deliveries comprising in combination, an oil tight casing, an extension on said casing having a valve chamber, a valve in said chamber, a gas supply ipe connected to said chamber on one side 0 said valve, a de livery pipe connected to said cham r on the other side of said valve, a shaft journalled in said casing, a disk keyed to said eeann.

shaft, a mating disk free on aid shaft, and means for actuating said free disk from said keyed disk to open said valve when said shaft is rotated, said valve closing when the shaft stops. Y

13. Apparatus of the character described, includin ing mec anism, sheet heating means ad's/- cent the path of the shee means for turning on said operated from the mechanism, said heating 'means being rendered inoperative when the In testimony whereof I hereunto aflixmy signature. I v 7 WILLIAM M. KELLY.

in combination, sheet manipulatand friction eating means path of the sheets, an element 

